Effect of metastable phase on the crystallization and mechanical properties of MgO-Al2O3-SiO2 glass-ceramics without nucleating agents

Impacts of substituting magnesium with zinc on crystallization behaviors in an aluminosilicate glass

“…Due to their excellent microwave performances, 1 high mechanical properties, 2 adjustable coefficient of thermal expansion, 3 and possible applications in various novel fields, [4][5][6] for example, electronic packing devices, millimeter-wave dielectrics or hard disk substrates, glass ceramics in the MgO-Al 2 O 3 -SiO 2 system have been extensively studied over the past several decades. To alter the nature of exclusive surface crystallization in the stoichiometric cordierite composition (2MgOÁ2Al 2 O 3 Á 5SiO 2 ), extensive research has focused on nucleating agents, such as TiO 2 , ZrO 2 , CeO 2 , or P 2 O 5 .…”

“…Recently, focusing on the composition with a 6 molar percent addition of ZnO into 15MgO·21Al 2 O 3 ·58SiO 2 , Prof. Wang et al have investigated the effects of a metastable phase on the crystallization behaviors and mechanical performances, unveiling the unexploited potential of adding ZnO to enhance the mechanical performances within this MgO–Al 2 O 3 –SiO 2 glass ceramic system. 2 Therefore, to better utilize the functionality of Zn cations within this glass ceramic system, investigations into the impacts of substituting Mg with Zn cations on crystallization behaviors are highly desired.…”